Loom stopping means



March 16, 1954 MUNRQE 2,672,167

LOOM STOPPING MEANS Filed June 24, 1952 2 Sheets-Sheet l Ely;

@ INVENTOR.

pfizyemo/z Munroe BY 6 5 6y .57

J6 ATTORNEYS.

March 16, 1954 P, MUNROE LOOM STOPPING MEANS 2 Sheets-Sheet 2 Filed June24, 1952 INVENTOR.

l zz /e mom Mi'zfir o e A T TORNEY Patented Mar. 16, 1954 LOOM STOPPINGMEANS Philemon Munroe, New Redford, Mass, assignor to Hoosac MillsCorporation, a corporation of Massachusetts Application June 24, 1952,Serial No. 295,167

Claims.

This invention relates to a loom stopping means.

It is common practice in automatic looms to have the filling battery atone end portion of the loom, usually the right-hand end, and the fillingfork mechanism at the other end portion of the loom. When the shuttlehas been picked from the shuttle box at the battery end of the loom andthere is an absence of filling in the shed, upon forward movement of thelay the filling fork mechanism will act to stop the loom as the layapproaches back center on the backward movement of the lay. The shuttleon the said backward movement will be picked out of the left-handshuttle box to be lodged into the righthand shuttle box when the loomstops. This is undesirable since the shuttle cannot be readily retrievedfrom the said right-hand shuttle box because of the obstruction of thesaid battery. The weaver usually has to set the loom in motion for apick thereof to drive the said shuttle out of said right-hand shuttlebox.

The general object of the invention is to provide a filling stop motionwhich will upon filling failure, operate to stop the loom as the layapproaches back center and the shuttle is positioned in the shuttle boxat the end of the loom opposite to the battery side thereof.

Another object is to provide means associated with the filling forkmechanism to be operated thereby to set the warp stop motion knock-offmechanism into action to stop the loom upon filling failure.

Another object is to provide means associated with the filling forkmechanism, which after being set into action upon filling failure, willbe reset and held in operative position by a movement of the loomshipper handle to an on position.

A more specific object of the invention is to provide for delayed actiontransmission in the usual filling fork motion for actuating the stoppingof the loom one pick after detection of filling failure.

With these and other objects in view, the invention consists. of certainnovel features of construction as will be more fully described andparticularly pointed out in the appended claims.

In the accompanying drawings:

Figure 1 is a top plan View of a portion of a loom embodying myinvention;

. Figure 2 is a top plan view of the filling fork mechanism shown inFigure 1 and on an enlarged scale;

Figure 3 is a top plan view of a fragmentary portion of the mechanismshown in Figure 2 but with certain elements shown in different relation;

Figure 4 is a similar View but showing the elements of the saidmechanism in a still further difierent relation;

Figure 5 is a fragmental sectional view taken along line 5-4; of Figure2;

Figure 6 is a similar view showing a difierent relationship of the partsshown in Figure 5;

Figure 7 is a view partially in section and taken substantially alonglines 7-7 of Figure 6';

Figure 8 is a side elevational view of the warp stop motion knock-offmechanism looking from the left of Figure 1;-

Figure 9 is a side elevational view partly in section of the fillingfork mechanism looking from the opposite direction from Figure 8; and

Figure 10 is a sectional view taken along line Hllll of Figure 8 and onan enlarged scale.

Referring to the drawings, particularly Figure 1, it designates aportion of a loom at the side opposite the filling battery (usually theleft-hand side) of a general construction well known and familiar tothose skilled in the art, which comprises a frame, a portion of one sideII of which is shown. The side frames H are connected by a breast beaml2 over which the cloth 0 being woven passes to be advanced and packagedby cloth take-up mechanism. The loom has swords 13 which support areciprocating lay M which is provided at each end with a shuttle box [5.As the lay I4 is reciprocated, the filling carrier or shuttle it will bepicked out of a shuttle box [5 by means of a picker I! to send theshuttle in fiight across the shed it to be boxed in the opposite shuttlebox, all in a usual manner.

The loom is also provided with a usual warp stop motion, not shown, butwell known in the art, which acts upon a warp failure to set into motiona so-called knock-01f mechanism designated generally [9 (see Figure 8).This knockoff mechanism comprises a knock-01f finger 20 which is pivotedas at 2! to the end 22 of a rod 23. This, finger 20 is urged to movetoward an inoperative position, shown in full lines by shading, by meansof a compression spring 24. The other end of the rod 23 is provided withan arm 25 having a slotted opening 26 therethrough in which is receiveda pin 27 projecting from the shipper lever 28 which is pivotally mountedby a stud 29 on a bracket 30 attached to the end of the breast beam I2.This bracket 30 has a stop 3| for engaging the shipper 28 when in the"on? position and a stop 32 for engaging the lever 28 when in the offposition, as shown in dot and dash lines (see Figure 8) The other end ofthe rod 23 is pivotally attached to a so-called knock-off bracket 33 bymeans of links 34 which are pivotally attached at one end to the saidbracket as at 35. The other end of the links is attached to the saidpivot 2| for the finger 20. Upon a warp failure such as the breakingthereof, the warp stop motion will be set into motion, which motion willthrough a flexible connection 35 move the finger 2s upwardly about thepivot 2| to place the same, as shown in dot and dash line in Figure 8,in the path of a bunter or knock-off 33 which is attached to the lay l4as by means of bolts 3'1. The connection 94 is a flexible cable having aplunger 3| (see Figure through which linear motion is transmitted to asliding pin 92 housed within the bracket 33 and biased into engagementwith the said plunger 9| by means of a spring 83. The pin 92 extendsinto engagement with the finger 2E! and will swin the same upwardly aspreviously stated.

Upon said finger being engaged by the hunter 36, the rod 23 will bemoved thereby in the direction of the rearward movement of the lay toswing the end 22 about the pivot and thereby exert a pull on the shipper28 to rock the same about the stud 29 to the off position shown in thesaid dot and dash line (see Figure 8). This motion of the lever 28 willbe transmitted through a brake rod 38 which is pivotally attached as at43 to the shipper 28, while the other end of this brake rod is attachedto a brake lever 4| rockable about a stud fastening 42, which uponrocking of said lever 4| through mechanism connected to said lever 4|will function to declutch the loom from its drive and apply the brake,not shown, to bring the loom to rest.

The filling fork mechanism designated generally 43 (see Figures 1 and 2)is mounted on the breast beam I2 at the left-hand side of the loom orthat side opposite to the filling battery, not shown, and includes afilling fork slide 44 which pivotally carries filling fork 45. The slide44 is moved by the usual mechanism including filling motion cam 45 (seeFigure 9) mounted on a shaft 41 which rotates one revolution to tworevolutions of the crank shaft and is engaged by a cam follower 48mounted on an arm 48 rockable about a pivot 50. This arm 49 is providedwith a portion 5| which extends on the opposite side of the pivot 58 andcarries a filling motion hook 52 which is engageable by the loop 53 ofthe filling fork 45 so as to slidably move the slide 44 in the fillingmotion stand 56. The slide 44 is normally maintained in its backwardposition by means of a pull spring 51 (Figure 2) herein shown as beingattached to th slide as at 58 and to the stand 56 as at 59. The fillingfork 45 is weighted to have the loop 53 thereof nor mally at a positionto be engaged by the hook 52. When the lay moves forward, the tangs (seeFigure 9) of the filling fork will be engaged by the filling F andtilted about its pivot to raise the loop 53 out of the path of theoscillation hook 52. If no filling F is present in the shed, the fork 45will not be tilted and the loop 53 will be engaged by the filling motionhook 52 to move the slide 44 in the direction toward the breast beam.This movement of the slide 44 toward the breast beam is usuallytransferred to a leverage system (not shown) which operates to shift theshipper 28 from the on to the off position to stop the loom. Theelements of the filling fork m iion mechanism and the motion so fardescribed are usual and well known.

In the present embodiment of the invention, the usual means associatedwith the filling fork slide to throw or shift the shipper from the on tothe offposition are omitted and an arm 6| having a right angular bend 62cut on a slant (53 (see Figure '7) is pivotally mounted on th slide 44as at 64. A rod 55 (Figure 2) is suitably mounted on a bracket (it whichis attached to the upper side of the breast beam :2 as by means of boltsand. nut fastenings 31. This bracket 35 carries a bearing 38 which hasan opening 59 to axially slidably receive the rod 55. This rod 65 has anabutment 16 attached at one end thereof which is provided with a camsurface 12 and a compression spring H encircling the rod 65 and actingbetween the said abutment ill and the adjacent edge of the bearing 58tends to move the rod outwardly or toward the shipper lever 28. Thisabutment with the loom in motion engages against the shipper 28 and whenthe shipper is moved to the off position, the rod 65 under urg of springII will be moved outwardly until stop collar 13 which is secured to therod 35 on the opposite side of the bearing 63 engages the bearing 68 andlimits the outward movement of the said rod 65. When the loom is placedin motion by pulling the shipper 28 to the on position, the shipper willengage the surface 12 to move the rod 65 to its on position as shown inFigures 2 and 3.

The rod 55 also mounts a support 14 which carries the end member 15 of aflexible cable 16 which is similar to the said cable 90. This member 15has a plunger H which projects outwardly at such a location that whenthe shipper handle is in the on position, it will be engaged by the end62 of the arm 5! upon a forward movement of the said slide 44 (seeFigures 2 and 3). The other end of the flexible cable i5 is alsoattached to the bracket 33 as by means of a nut fastening 18 (Figure 10)and its plunger end 19 (see Figure 10) engages a pin 92 extending intoengagement with the finger 25 and biased into engagement with plungerend 19 by means of a spring 93. Thus motion of the plunger Ti will betransmitted through the cable 15 to rock or raise the finger 2D toactuate the said knock-off.

Assuming the loom to be in motion with an absence of filling F in theshed l8 and at the present instance the shuttle lodged in the lefthandshuttle box, the lay M at back center moving towards front centerthrough bottom center, the cam follower 48 engaging the dwell on the lowside of the cam 46 which is turning counterclockwise (see Figure 9), thearm 6| will be at its normal position inwardly of the free end of theplunger 11 and the slanted face 63 of the arm 5| will be resting uponthe plunger 11 (see Figures 1 and 6). Upon the forward movement of thelay or from back center to front center through bottom center, thefilling fork 45 will remain stationary because of the said absence offilling F in the shed l8 and the loop 53 thereof will be in the path ofthe hook 52 carried by the arm or hub 49 which is being rocked in acounterclockwise direction about the pivot 53 by the now rising cam 46.As the lay [4 passes front center and moving towards top center, thehook 52 will engage the loop 53 of the filling fork 45 and furthermovement of the hook 52 in the same direction will move the slide 44towards the breast beam in the manner previously stated and hold saidslide 44 at said forward position against the action of the spring 51during the dwell on the high side of the cam in the usual manner. Thefinger '6l will be carried by the slide beyond the end of the plunger11, which finger upon being free of the plunger 1! will swing downwardlyby gravity to the full-line position shown in Figures 2 and 5 to be at aposition to engage the plunger H on the return movement of the slide M.A stop pin 89 (Figure 5) may be provided to limit the downward swing ofsaid arm 6|. As the lay l4 approaches top center, the shuttle will bepicked out of the left-hand shuttle box to be sent in flight across theshed I 8 to be lodged in the righthand shuttle box. As the lay continuesmoving in the same direction through back center and then forwardlythrough bottom center, the cam will be turning towards the low sidethereof causing a reversed or clockwise rocking movement of the arm 49about the pivot 50 to move the hook 52 away from the breast beam i2 andthe slide under the urge of the spring 5! to move to its normal ororiginal position. As the slide 44 is being moved towards the saidoriginal position, the arm 6| carried thereby will engage and move theplunger inwardly (see Figure 3) to transmit the return motion of saidslide 44 to the pin 92' to raise the finger 20 in position to be engagedby the hunter 36. The finger is moved in the said raised position afterthe lay M has passed the same in the forward movement thereof. The laydirection past front center and towards back center through top center.As the lay l4 again approaches top center, the shuttle will be pickedout of the right-hand shuttle box to be sent in flight across the shed[8 to be lodged in the lefthand shuttle box and the bunter 36 willengage the raised finger 2!) to pull the shipper '28 from the onposition to the off position to declutch and apply the brake on the loomas the lay is approaching back center. It will now be seen that thefilling fork mechanism operates to delay the action of stopping the loomone pick upon filling failure by reason of the operating action to stopthe loom taking place as the filling slide 44 returns to its normalposition rather than heretofore on its motion toward the breast beam,thus providing for returning of the shuttle into the shuttle box at thatend of the lay at which the filling detection took place.

When the shipper is moved to the off position, r

the rod under urge of spring II will be moved outwardly as seen inFigures 4 and '7 to position the plunger H beyond the end of the arm 62.Upon movement of the shipper 23 to the on position, the same will engagethe surface l2 of the abutment iii and push the rod 65 inwardly. Theplunger 71 carried thereby will engage the slanted or cam surface '63 ofthe arm 62 to swing the same upwardly so as to rest on said plunger 11as previously described.

I claim:

1. In a loom, a lay, an abutment on said lay, a filling fork detectingmechanism including a filling fork, a slide on which said fork ispivoted, a knock-off operable to stop the loom and adapted to bepositioned in and out of the path of movement of said abutment, meansfor moving said slide in one direction upon filling failure, resilientmeans for returning said slide in the other direction, and meansconnected to said knock-on" operated by the return movement of saidslide to position said knock-off in the path of said abutment to beengaged thereby to be moved to stop the loom.

2. In a loom, a reciprocating lay, a filling fork M will continue tomove in the same detecting mechanism operated upon filling failure tostop the loom, said mechanism including a filling feeling fork, a slideon which said fork is pivoted, means adapted to engage said filling forkfor moving said slide in one direction upon filling failure, resilientmeans for returning said slide in the other direction, an abutmentcarried by said lay, a knock-off movably mounted and operated byengagement with said abutment to stop the loom and adapted to bepositioned in and out of the path of movement of said abutment, andmotion transmitting means connected to said knockoff for transmittingthe motion of said slide to move said knock-off in the path of saidabutment during the return movement of said slide.

3. In a loom, a warp stop motion operated upon warp failure to stop theloom, a filling feeling fork, a slide on which said fork is pivoted,rockable means adapted to engage said filling fork for moving said slidein one direction upon filling failure, resilient means for returningsaid slide in the other direction, and means carried by said slideoperatively connecting said warp stop motion to said slide to actuatesaid warp stop motion during the return movement of said slide.

4. In a loom, a warp stop motion operated upon warp failure to stop theloom, a filling feeling fork, a slide on which said fork is pivoted,rookable means adapted to engage said filling fork for moving said slidein one direction upon filling failure, resilient means for returningsaid slide in the other direction, an arm pivotally mounted on saidslide to move therewith, means operatively connected to said warp stopmotion and having a plunger positioned in the path of said arm andengageable thereby to transmit the motion of said slide to said warpstop motion to actuate the same during the return movement of saidslide.

5. In a loom, a warp stop motion operated upon warp failure to stop theloom, a filling feeling fork, a slide on which said fork is pivoted,rockable means for moving said slide in one direction upon fillingfailure, resilient means for returning a said slide in the otherdirection, an arm pivotally mounted on said slide to port slidablymounted, a mitting means carried by said support and movable thereby andinto the path of said arm and operatively connected to said warp stopmotion, said motion transmitting means having a plunger thereonengageable by said arm to transmit the motion of said slide to said warpstop motion to actuate the same during the return movement of saidslide.

6. In a loom, a warp stop motion operated upon warp failure to stop theloom, a filling feeling fork, a slide on which said fork is pivoted,means for moving said slide in one direction upon filling failure,resilient means for returning said slide in the other direction, meansfor transmitting the motion of said slide to said warp stop motion toactuate the same including a plunger, an arm movably mounted on saidslide and normally resting on said plunger and carried by said slidebeyond said plunger in the movement of said slide in the said onedirection, said arm moving in line with said plunger when free thereofto be in position to engage the plunger during the return movement ofsaid slide to actuate said warp stop motion.

7. In a loom, a shipper lever movable to an on and off position, a warpstop motion operated upon warp failure to stop the loom, a fillingfeeling fork, a slide on which said forkis pivoted,

move therewith, a supfiexible motion transmeans for moving said slide inone direction upon filling failure, resilient means for returning saidslide in the other direction, means for transmitting the motion of saidslide to said warp stop motion to actuate the same including an armcarried by said slide, motion transmitting means including a plungerengageable by said arm for transmitting the motion of said slide to saidwarp stop motion to actuate the same, a slidable support on which saidplunger is secured, said support having an abutment thereon engageableagainst said shipper lever when in the on position to hold said plungerin position to be engaged by said arm and resilient means for movingsaid support to move said plunger out of said position when saidabutment is free of said shipper lever upon the movement thereof to theoff position.

8. In a loom as set forth in claim 7 further comprising a cam surface onsaid abutment engageable by said shipper lever to move said support toinitial position upon moving said shipper lever to the on position.

9. In a loom, a filling fork detecting mechanism including a fillingfeeling fork, a. slide on which said fork is pivoted, a knock-offoperated to stop the loom, means for moving said slide in one directionupon filling failure, resilient means for returning said slide in theother direction, a rockable arm carried by said slide and having a camsurface thereon, means for transmitting the movement of said slide tosaid knock-off to actuate the same including a plunger, said armnormally resting on said plunger and movable beyond the same and in linetherewith upon the movement of said slide in the said one direction,said arm engaging said plunger on the return movement of said slide totransmit the return movement of said slide to actuate said knock-off.

10. In a loom, a loom stop means including a knock-off, an abutmentcarried by the loom lay and adapted to engage said knock-off to move thesame to stop the loom, a filling slide detector movable in one directionupon filling failure, spring means for returning said slide in the otherdirection, a plunger connected to said knock-off for moving the sameinto the path of said abutment, and a rockable finger carried by saidslide for engaging said plunger to move the same on the said returnmovement of said slide to position said knock-off in the path ofmovement of said abutment.

PHILEMON MUNROE.

References Cited in the file of this patent

